John e



(No Model() J. E. BECKMAN. APPARATUS EUR COOLING WASTE WATER.

No. 586,281. Patented July 13,1897.

whe.

l-r-niom UNITED STATES PATENT OEEIcE.

JOHN E. BECKMAN, OF BUFFALO, NEV YORK, ASSIGNOR OF ONE-HALF TO JOHN F.BERRIOK, OF SAME PLACE.

APPARATUS FOR COOLING WASTE WATER.

SPECIFICATION forming part of Letters Patent No. 586,281, dated July 13,1897. Application filed February 19, 1897. Serial No. 624,194. (Nomodel.)V

T rZZZ 70750777, 7'Ir2 may concern.-

Be it known that I, JOHN E. BECKMAN, a

citizen of the United States, residing at Buf-.

falo, in the county of Erie and State of New .5 York, have inventednewand usefullmprovements in Apparatus for Cooling `Waste lVater, ofwhich the following is a specification. This invention has the object toprovide means for cooling the waste water of steam lo plants before itis discharged into the sewer or drain, so that the waste water entersthe sewer or drain cool, and at the same time to save the water which isemployed for cooling the waste water. As now commonly pracx ticed thehot waste water is mixed with cold water before it is discharged intothe sewer, wherebyT the waste water is cooled and the harmful results ofdischarging hot water into the sewer are avoided, but the cold water 2owhich is used for cooling is wasted in this method, and as largequantities of cold water are required for this purpose the cost of thewasted cold water is considerable. According to my invention the coldwater which is used for cooling thehot waste water and which ab,- sorbsthe heat from the waste water is used for feeding the boiler, so thatthe heat which has been extracted from the waste water is returned tothe steam plant. 3o The accompanying drawing represents a sectionalelevation of an apparatus whereby my invention can be practiced.

A represents the receiving or expansion tank, which collects the hotwaste water from the various pipes a, which receive the hot water fromthe blow-oit cocks of the steamboiler, the drips of the steam-engine andsteam-pumps, and other apparatus in the steam plant, which may be thatof an oftice- 4o building, store, or factory. This tank may also receivethe exhaust-steam through a pipe Z).

O represents a surface condenser which surmounts the expansion-tank andreceives the steam or vapor therefrom through pipes c. These pipes openinto the space surrounding the cooling-pipes CZ of the condenser, andthe upper portion of this space communicates with a vent-pipe CZ', whichopens into the atmosphere, preferably through the roof of the buildingin which the plant is situated. The

pipes CZ communicate at their-lower ends with the lower waterchamberD ofthe condenser, and at their upper ends with the upper water-chamber D. p

E represents the hot-water-discharge pipe through which the hot waterescapes from the expansion-tank and which connects with the upper end ofa cooling-coil F. The latter is arranged in a closed cooling-tank G, and6o its tail-pipefextends through the lower portion of this tank andleads to a sewer or drain H. A trap h and a fresh-air inlet Z arearranged in the tail-pipe between the coil and the drain. The tank G isprovided with a blow-off pipe Z opening into the tail-pipef. Anair-inlet valve j is preferably arranged in the hot-water pipe E,leading to the coil F, to admit air to the coil in case a partial vacuumshould be formed in the same. The 7o hot-water pipe E is preferablyprovided with a branch pipe e, through which the water can be dischargedfrom the receiving-tank A into the drain without passing through thecool'- ing-coil, for instance in cleaning the receiving-tank.

K represents the cold-water pipe which leads to the lower portion of thecooling-tank G and through which the water which is used for cooling thehot water is supplied to the 8o tank. The upper portion of this tank isconnected with the lower water-chamber D of the condenser by a pipe Z,and the upper water-chamber D' has at its upper end an escapepipe m,through which the hot water escapes therefrom.

The hot water parts with its steam or vapor in the expansion-tank, andthe steam or vapor escapes upwardly through the condenser O and iscondensed in the same, the con- 9o densed water iiowing back into theexpansion-tank through the pipes c. The hot waste water flows from theexpansion-tank through the cooling-coil F, and is cooled in the same bythe surrounding cold water and discharged 'cool through the tail-pipeinto the drain.

The incoming cold water becomes heated in the water-cooling tank G andflows upwardly through the latter and through the pipe Z into the lowerportion of the condenser O. The roo water becomes still further heatedin the latter in -condensing the vapor or steam and escapes more or lessheated from the upper end of this tank through the pipe m. This heatedwater may now be supplied to the steamboiler after passing it through afeed-water heater of any suitable construction or by pumping it directlyinto the boiler, or it may be otherwise utilized, as may be preferred.By this means the heat which is contained in the hot waste water andexhaust-steam is extracted before the water is discharged into the sewerand the water is delivered cool,while the water whichreceives such heatis utilized, thereby avoiding the wasting of the water which has beenused for coolin g the hot waste water.

I claim as my inventionl. The combination with a receiving-tank whichcollects the hot waste water and which is provided with an outlet-pipefor the escape of such water, of a surface cooler which is arrangedbelow said outletpipe and which has its upper end connected therewith toreceive the hot waste water from said tank, and which is provided with acold-water supply by which the cooling-water is admitted to the coolernear the lower or discharge end thereof and with an escape for theheated cooling-water at the opposite end, substantially as set forth.

2. The combination with a receiving-tank which collects the hot wastewater and which is provided with an outlet-pipe for the escape of suchwater and above said pipe with an ascending Vapor -escape pipe, of asurface condenser which is arranged above said tank and connected at itslower end with said vapor-escape pipe, and a surface cooler which isarranged below the water-outlet of said ranged below the water-outlet ofsaid tank and which has its upper end connected therewith to receivefthe hot water therefrom, a

supply-pipe for admitting the cooling-water to the lower end of saidcooler, and a connecting-pipe whereby the partially-heated cooling-wateris conducted from the upper end of said cooler to said surfacecondenser, substantially as set forth.

fitness my hand this 15th day of February, 1897.

JOHN E. BECKMAN.

lVitnesses:

JNO. J. BoNNnR, KATHRYN ELMORE.

